RANKING · 2024 ACS · 88 SHOWN OF 88

Largest Irish population, Ohio counties

Ohio counties ranked by the number of residents who are Irish ancestry, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 88 counties in Ohio that qualify, ranked against each other statewide.

Irish Americans: full group profile →

OhioAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH POPULATIONVS 2010

01Franklin County, OHOH1,361,536149,529−9%

02Cuyahoga County, OHOH1,232,925145,837−14%

03Hamilton County, OHOH838,418100,835−14%

04Summit County, OHOH538,37671,812−14%

05Montgomery County, OHOH539,59863,324−8%

06Stark County, OHOH373,77148,744−17%

07Lucas County, OHOH423,34748,084−18%

08Butler County, OHOH400,12847,247−5%

09Lorain County, OHOH323,21943,573−13%

10Lake County, OHOH232,21740,155−7%

11Delaware County, OHOH242,03233,038+22%

12Mahoning County, OHOH224,70631,524−21%

13Warren County, OHOH257,18130,624+5%

14Clermont County, OHOH216,97729,102−18%

15Medina County, OHOH185,02529,056−7%

16Licking County, OHOH185,56423,864−9%

17Trumbull County, OHOH198,97222,643−26%

18Greene County, OHOH174,32222,258+7%

19Portage County, OHOH163,40422,256−19%

20Fairfield County, OHOH169,75219,337−17%

21Clark County, OHOH135,34017,429−17%

22Columbiana County, OHOH99,37716,960−12%

23Wood County, OHOH134,17615,095−16%

24Geauga County, OHOH95,67614,471−10%

25Ashtabula County, OHOH96,71313,860−14%

26Richland County, OHOH124,89313,680−19%

27Miami County, OHOH112,63413,297−4%

28Wayne County, OHOH116,75811,659−21%

29Allen County, OHOH100,88111,611−14%

30Tuscarawas County, OHOH92,37311,116−25%

31Erie County, OHOH73,29610,803−8%

32Jefferson County, OHOH63,5979,905−17%

33Muskingum County, OHOH87,0149,756−27%

34Athens County, OHOH63,1979,531+5%

35Scioto County, OHOH71,3659,076−24%

36Belmont County, OHOH64,4348,896−29%

37Union County, OHOH73,4468,817+14%

38Ross County, OHOH76,4298,695−26%

39Pickaway County, OHOH62,9788,641+5%

40Marion County, OHOH65,1158,046−20%

41Washington County, OHOH58,3898,041−23%

42Knox County, OHOH64,0027,863−9%

43Lawrence County, OHOH55,7107,434−8%

44Hancock County, OHOH75,0346,756−18%

45Madison County, OHOH46,9856,574−7%

46Huron County, OHOH58,2506,334−27%

47Sandusky County, OHOH58,6556,172−16%

48Guernsey County, OHOH38,3796,130−0%

49Clinton County, OHOH42,3015,899−10%

50Seneca County, OHOH54,5225,897−1%

51Logan County, OHOH46,3025,855−5%

52Ashland County, OHOH52,5235,735−4%

53Champaign County, OHOH38,8205,432−9%

54Brown County, OHOH44,3975,372−15%

55Highland County, OHOH43,8235,292−19%

56Darke County, OHOH51,5205,228−7%

57Ottawa County, OHOH39,4815,215+5%

58Fulton County, OHOH41,8535,109+1%

59Auglaize County, OHOH45,9094,920−15%

60Coshocton County, OHOH37,1884,899−7%

61Crawford County, OHOH41,8964,801−24%

62Perry County, OHOH35,9184,672−12%

63Shelby County, OHOH48,0654,624−15%

64Preble County, OHOH40,6644,524−27%

65Morrow County, OHOH36,3054,418−12%

66Fayette County, OHOH28,5523,889+27%

67Jackson County, OHOH32,8173,876+1%

68Adams County, OHOH27,8653,846−12%

69Williams County, OHOH36,5493,769−18%

70Carroll County, OHOH26,4753,638−13%

71Gallia County, OHOH29,0723,609−25%

72Mercer County, OHOH42,7373,590+6%

73Defiance County, OHOH38,2923,503−28%

74Hocking County, OHOH27,5123,381−18%

75Hardin County, OHOH30,0723,198−34%

76Meigs County, OHOH21,5872,701−20%

77Pike County, OHOH27,0612,606−39%

78Henry County, OHOH27,5982,518−17%

79Putnam County, OHOH34,3802,326−14%

80Wyandot County, OHOH21,5672,200−13%

81Van Wert County, OHOH29,0131,995−44%

82Noble County, OHOH14,2761,715−10%

83Harrison County, OHOH14,0701,680−32%

84Holmes County, OHOH44,9701,670−40%

85Paulding County, OHOH18,7271,630−21%

86Morgan County, OHOH13,6261,584−18%

87Monroe County, OHOH12,9941,384−35%

88Vinton County, OHOH12,6451,330−31%

SHOWING 1–88 OF 88

Download CSV (full list, 88 rows)

UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES